Norfolk, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.9 °F (low) to 54.1 °F (high). Annual precipitation averages 38.7 Inches. Norfolk is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.1 °F | 25.0 °F | 2.68 in. |
| February | 9.7 °F | 27.6 °F | 2.18 in. |
| March | 20.2 °F | 37.5 °F | 2.42 in. |
| April | 34.0 °F | 52.8 °F | 3.26 in. |
| May | 46.3 °F | 67.1 °F | 3.34 in. |
| June | 55.5 °F | 75.2 °F | 3.85 in. |
| July | 60.4 °F | 80.0 °F | 3.68 in. |
| August | 58.5 °F | 78.5 °F | 3.37 in. |
| September | 50.6 °F | 71.2 °F | 3.72 in. |
| October | 40.0 °F | 57.6 °F | 4.1 in. |
| November | 29.4 °F | 44.5 °F | 3.24 in. |
| December | 17.5 °F | 32.1 °F | 2.9 in. |
| Annual | 35.9 °F | 54.1 °F | 38.74 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |